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redi_basic_pstream

redi::basic_pstream(3)					     Library Functions Manual					    redi::basic_pstream(3)

NAME

       redi::basic_pstream -

       Class template for Bidirectional PStreams.

SYNOPSIS

       #include <pstream.h>

       Inherits redi::pstream_common< CharT, Traits >, and redi::pstreams.

   Public Types
       typedef pbase_type::pmode pmode
	   Type used to specify how to connect to the process.
       typedef pbase_type::argv_type argv_type
	   Type used to hold the arguments for a command.
       typedef int fd_type
	   Type used for file descriptors.
       typedef int fd_type
	   Type used for file descriptors.

   Public Member Functions
       basic_pstream ()
	   Default constructor, creates an uninitialised stream.
       basic_pstream (const std::string &command, pmode mode=pstdout|pstdin)
	   Constructor that initialises the stream by starting a process.
       basic_pstream (const std::string &file, const argv_type &argv, pmode mode=pstdout|pstdin)
	   Constructor that initialises the stream by starting a process.
       ~basic_pstream ()
	   Destructor.
       void open (const std::string &command, pmode mode=pstdout|pstdin)
	   Start a process.
       void open (const std::string &file, const argv_type &argv, pmode mode=pstdout|pstdin)
	   Start a process.
       basic_pstream & out ()
	   Set streambuf to read from process' stdout.
       basic_pstream & err ()
	   Set streambuf to read from process' stderr.
       void close ()
	   Close the pipe.
       bool is_open () const
	   Report whether the stream's buffer has been initialised.
       const std::string & command () const
	   Return the command used to initialise the stream.
       streambuf_type * rdbuf () const
	   Return a pointer to the stream buffer.

   Static Public Attributes
       static const pmode pstdin = std::ios_base::out
	   Write to stdin.
       static const pmode pstdout = std::ios_base::in
	   Read from stdout.
       static const pmode pstderr = std::ios_base::app
	   Read from stderr.
       static const pmode pstdin = std::ios_base::out
	   Write to stdin.
       static const pmode pstdout = std::ios_base::in
	   Read from stdout.
       static const pmode pstderr = std::ios_base::app
	   Read from stderr.

   Protected Types
       typedef basic_pstreambuf< CharT, Traits > streambuf_type
       enum { bufsz =  32 }
       enum { pbsz =  2 }
       enum { bufsz =  32 }
       enum { pbsz =  2 }

   Protected Member Functions
       void do_open (const std::string &command, pmode mode)
	   Start a process.
       void do_open (const std::string &file, const argv_type &argv, pmode mode)
	   Start a process.

   Protected Attributes
       std::string command_
	   The command used to start the process.
       streambuf_type buf_
	   The stream buffer.

Detailed Description
   template<typename CharT, typename Traits = std::char_traits<CharT>>class redi::basic_pstream< CharT, Traits >
       Class template for Bidirectional PStreams.

       Writing to a pstream opened with pmode pstdin writes to the standard input of the command. Reading from a pstream opened with pmode pstdout
       and/or pstderr reads the command's standard output and/or standard error. Any of the process' stdin, stdout or stderr that is not connected
       to the pstream (as specified by the pmode) will be the same as the process that created the pstream object, unless altered by the command
       itself.

Constructor &; Destructor Documentation
   template<typename CharT , typename Traits  = std::char_traits<CharT>> redi::basic_pstream< CharT, Traits >::basic_pstream (const std::string
       &command, pmodemode = pstdout|pstdin) [inline]
       Constructor that initialises the stream by starting a process. Initialises the stream buffer by calling do_open() with the supplied
       arguments.

       Parameters:
	   command a string containing a shell command.
	   mode the I/O mode to use when opening the pipe.

       See also:
	   do_open(const std::string&, pmode)

   template<typename CharT , typename Traits  = std::char_traits<CharT>> redi::basic_pstream< CharT, Traits >::basic_pstream (const std::string
       &file, const argv_type &argv, pmodemode = pstdout|pstdin) [inline]
       Constructor that initialises the stream by starting a process. Initialises the stream buffer by calling do_open() with the supplied
       arguments.

       Parameters:
	   file a string containing the pathname of a program to execute.
	   argv a vector of argument strings passed to the new program.
	   mode the I/O mode to use when opening the pipe.

       See also:
	   do_open(const std::string&, const argv_type&, pmode)

   template<typename CharT , typename Traits  = std::char_traits<CharT>> redi::basic_pstream< CharT, Traits >::~basic_pstream () [inline]
       Destructor. Closes the stream and waits for the child to exit.

Member Function Documentation
   template<typename C , typename T > void redi::pstream_common< C, T >::close () [inline, inherited]
       Close the pipe. Calls rdbuf->close() and sets failbit on error.

   template<typename C , typename T > const std::string & redi::pstream_common< C, T >::command () const [inline, inherited]
       Return the command used to initialise the stream. Returns:
	   a string containing the command used to initialise the stream.

   template<typename C , typename T > void redi::pstream_common< C, T >::do_open (const std::string &command, pmodemode) [inline, protected,
       inherited]
       Start a process. Calls rdbuf()->open( command , mode ) and sets failbit on error.

       Parameters:
	   command a string containing a shell command.
	   mode the I/O mode to use when opening the pipe.

       See also:
	   basic_pstreambuf::open(const std::string&, pmode)

       Referenced by redi::basic_rpstream< CharT, Traits >::open(), redi::basic_pstream< CharT, Traits >::open(), redi::basic_opstream< CharT,
       Traits >::open(), redi::basic_ipstream< CharT, Traits >::open(), and redi::pstream_common< CharT, Traits >::pstream_common().

   template<typename C , typename T > void redi::pstream_common< C, T >::do_open (const std::string &file, const argv_type &argv, pmodemode)
       [inline, protected, inherited]
       Start a process. Calls rdbuf()->open( file, argv, mode ) and sets failbit on error.

       Parameters:
	   file a string containing the pathname of a program to execute.
	   argv a vector of argument strings passed to the new program.
	   mode the I/O mode to use when opening the pipe.

       See also:
	   basic_pstreambuf::open(const std::string&, const argv_type&, pmode)

   template<typename CharT , typename Traits  = std::char_traits<CharT>> basic_pstream& redi::basic_pstream< CharT, Traits >::err () [inline]
       Set streambuf to read from process' stderr. Returns:
	   *this

       References redi::pstream_common< CharT, Traits >::buf_, and redi::basic_pstreambuf< CharT, Traits >::read_err().

   template<typename C , typename T > bool redi::pstream_common< C, T >::is_open () const [inline, inherited]
       Report whether the stream's buffer has been initialised. Returns:
	   rdbuf()->is_open().

       See also:
	   basic_pstreambuf::is_open()

   template<typename CharT , typename Traits  = std::char_traits<CharT>> void redi::basic_pstream< CharT, Traits >::open (const std::string
       &command, pmodemode = pstdout|pstdin) [inline]
       Start a process. Calls do_open( command , mode ).

       Parameters:
	   command a string containing a shell command.
	   mode the I/O mode to use when opening the pipe.

       See also:
	   do_open(const std::string&, pmode)

       References redi::pstream_common< CharT, Traits >::do_open().

   template<typename CharT , typename Traits  = std::char_traits<CharT>> void redi::basic_pstream< CharT, Traits >::open (const std::string &file,
       const argv_type &argv, pmodemode = pstdout|pstdin) [inline]
       Start a process. Calls do_open( file , argv , mode ).

       Parameters:
	   file a string containing the pathname of a program to execute.
	   argv a vector of argument strings passed to the new program.
	   mode the I/O mode to use when opening the pipe.

       See also:
	   do_open(const std::string&, const argv_type&, pmode)

       References redi::pstream_common< CharT, Traits >::do_open().

   template<typename CharT , typename Traits  = std::char_traits<CharT>> basic_pstream& redi::basic_pstream< CharT, Traits >::out () [inline]
       Set streambuf to read from process' stdout. Returns:
	   *this

       References redi::pstream_common< CharT, Traits >::buf_, and redi::basic_pstreambuf< CharT, Traits >::read_err().

   template<typename C , typename T > pstream_common< C, T >::streambuf_type * redi::pstream_common< C, T >::rdbuf () const [inline, inherited]
       Return a pointer to the stream buffer. Returns:
	   a pointer to the private stream buffer member.

Author
       Generated automatically by Doxygen for PStreams from the source code.

PStreams							  Thu Nov 10 2011					    redi::basic_pstream(3)

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